An oil sprayer spreads a very thin layer over the food. It's the easiest way to get even browning in the air fryer with little fat, without drenching the food or using more than you need.

Many foods need some fat on the surface to brown and turn crispy, such as croquettes or potatoes. With a sprayer you control the amount and spread it better than with a direct pour. See it in action in air fryer croquettes and air fryer French fries.

1. Refillable container made of glass or food-grade plastic.
2. Pump mechanism that gives a fine mist and doesn't drip.
3. Easy to clean, so it doesn't clog with old oil.
4. Size that fits in your kitchen.

• Commercial aerosols on the nonstick coating: some air fryer manufacturers advise against their use. Check your model's manual.
• Too much oil: a thin coat is enough; more fat doesn't brown better.

Pair it with perforated liners to make cleaning easier.

• Spraying the basket instead of the food. It's better to apply the oil to the food.
• Leaving old oil inside. It can go rancid and clog the nozzle; clean the container from time to time.
• Using too much. A thin coat is enough; excess smokes and makes a mess.

One suitable for cooking at the temperature you'll be using. Check the oil's label and its smoke point.

Not always. Many foods with their own fat don't need it, but some breaded items and potatoes turn out better with a touch of oil.

Empty it, wash it with hot water and mild soap and let it dry before refilling.

• Air Fryer Accessories: What's Actually Worth Buying — The air fryer accessories you'll actually use: perforated liners, racks, silicone moulds, tongs and oil sprayers, with tips for choosing them.
• Air Fryer Liners: Types and How to Use Them — Air fryer liners: perforated parchment, baking paper and silicone, what they're for, how to place them so they don't lift, and what to check before buying.
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• Air Fryers: How They Work and How to Choose Yours — Everything about air fryers: how they work, types (basket, oven, dual-basket), what to check before buying, and links to brands, guides and recipes.